// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/base/android/sdk_media_codec_bridge.h"

#include <stddef.h>
#include <stdint.h>

#include <memory>
#include <string>

#include "base/logging.h"
#include "media/base/android/media_codec_util.h"
#include "media/base/decoder_buffer.h"
#include "media/base/test_data_util.h"
#include "testing/gmock/include/gmock/gmock.h"

namespace {

// The first frame of
// http://www.html5rocks.com/en/tutorials/audio/quick/test.mp3
unsigned char test_mp3[] = {
    0xff, 0xfb, 0xd2, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x69, 0x05, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x0d, 0x20, 0x00, 0x00, 0x00, 0x2a, 0x7e, 0x40,
    0xc0, 0x19, 0x4a, 0x80, 0x0d, 0x60, 0x48, 0x1b, 0x40, 0xf7, 0xbd, 0xb9,
    0xd9, 0x40, 0x6f, 0x82, 0x01, 0x8b, 0x17, 0xa0, 0x80, 0xc5, 0x01, 0xad,
    0x9a, 0xd3, 0x00, 0x12, 0xc0, 0x72, 0x93, 0x67, 0xd0, 0x03, 0x6f, 0xa4,
    0xc0, 0xc3, 0x23, 0xee, 0x9b, 0xc0, 0xcc, 0x02, 0xa0, 0xa1, 0x30, 0x0c,
    0x52, 0x2d, 0xfd, 0x6e, 0x08, 0x83, 0x60, 0x40, 0x46, 0x06, 0x4b, 0x20,
    0x82, 0x82, 0x7f, 0xd4, 0x81, 0xe7, 0x00, 0x64, 0x20, 0x18, 0xec, 0xc2,
    0x06, 0x57, 0x0f, 0x81, 0x93, 0x0b, 0x00, 0x66, 0xe3, 0xb7, 0xe8, 0x32,
    0x6e, 0xf0, 0x32, 0xb0, 0x58, 0x0c, 0x7c, 0x3a, 0x03, 0x22, 0x14, 0x80,
    0xc9, 0x01, 0x80, 0x30, 0x20, 0x14, 0x0c, 0x96, 0x73, 0xfe, 0x9f, 0x6c,
    0x0c, 0xd2, 0x25, 0x0f, 0xdc, 0x0c, 0x32, 0x43, 0x03, 0x27, 0x87, 0xc0,
    0xc2, 0xc0, 0x20, 0xfc, 0x42, 0xc5, 0xff, 0xff, 0xd4, 0x80, 0x01, 0x01,
    0x80, 0xc3, 0x81, 0x01, 0x95, 0x03, 0x28, 0x82, 0xc0, 0xc3, 0x01, 0xa1,
    0x06, 0x81, 0x87, 0xc2, 0x40, 0x64, 0xc1, 0xf0, 0x12, 0x02, 0xff, 0xf6,
    0x5b, 0x9f, 0x44, 0xdc, 0xdd, 0x0b, 0x38, 0x59, 0xe0, 0x31, 0x71, 0x60,
    0x0c, 0xb4, 0x22, 0x03, 0x3b, 0x96, 0x40, 0xc8, 0x63, 0x90, 0x0a, 0x23,
    0x81, 0x9e, 0x4c, 0x20, 0x65, 0xb3, 0x18, 0x19, 0x6c, 0x42, 0x06, 0x36,
    0x1d, 0x01, 0x90, 0x87, 0xdf, 0xff, 0xd0, 0x65, 0xa6, 0xea, 0x66, 0xfd,
    0x40, 0x0c, 0x48, 0x03, 0x1a, 0x09, 0x01, 0x21, 0x98, 0x19, 0x2c, 0x36,
    0x06, 0x43, 0x21, 0x81, 0x92, 0xca, 0x60, 0x64, 0x70, 0xb8, 0x19, 0x20,
    0x6c, 0x02, 0x83, 0x80, 0xcb, 0x60, 0x65, 0x32, 0x28, 0x18, 0x64, 0x24,
    0x06, 0x3a, 0x0c, 0x00, 0xe1, 0x00, 0x18, 0xd0, 0x35, 0xff, 0xff, 0xff,
    0xe8, 0x32, 0xef, 0xb2, 0x90, 0x65, 0xbb, 0xdd, 0x94, 0x82, 0x0b, 0x4c,
    0xfa, 0x25, 0xf3, 0x74, 0x13, 0x0f, 0xf8, 0x19, 0x28, 0x84, 0x06, 0x36,
    0x11, 0x01, 0x20, 0x80, 0x18, 0xb4, 0x52, 0x0e, 0x15, 0x00, 0x30, 0x50,
    0x0c, 0x84, 0x32, 0x03, 0x11, 0x04, 0x03, 0x48, 0x04, 0x00, 0x00, 0x31,
    0x21, 0x00, 0x0c, 0x84, 0x18, 0x03, 0x07, 0x85, 0x40, 0xc6, 0xa5, 0x70,
    0x32, 0xb8, 0x7c, 0x0c, 0x54, 0x04, 0x00, 0xd0, 0x08, 0x59, 0x58, 0x18,
    0x20, 0x14, 0x06, 0x30, 0x30, 0x01, 0x9b, 0x86, 0x00, 0x6b, 0x54, 0xa8,
    0x19, 0x8c, 0x2a, 0x06, 0x16, 0x09, 0x01, 0xa0, 0xd0, 0xa0, 0x69, 0x74,
    0xb8, 0x19, 0xc4, 0x4a, 0xa3, 0xda, 0x9d, 0x1e, 0x4f, 0x05, 0xc0, 0x5b,
    0x0b, 0x03, 0xc2, 0x76, 0xa3, 0x4f, 0xb9, 0x16, 0xc2, 0x70, 0x41, 0x07,
    0xa0, 0x84, 0x16, 0x38, 0x4a, 0xc8, 0xaf, 0xee, 0x7f, 0x93, 0xb5, 0x5c,
    0x39, 0x1e, 0x29, 0xd9, 0x8c, 0x80, 0xb5, 0x80, 0xe6, 0x85, 0xb2, 0x99,
    0x68, 0x85, 0x46, 0x91, 0x60, 0xdb, 0x06, 0xfa, 0x38, 0x7a, 0xc7, 0xac,
    0x85, 0xa8, 0xd3, 0xe6, 0x99, 0x3b, 0x66, 0x43, 0x23, 0x1f, 0x84, 0xe1,
    0x65, 0x5e, 0xbc, 0x84, 0x18, 0x62, 0xe6, 0x42, 0x0b, 0x82, 0xe4, 0xd3,
    0x42, 0xd2, 0x05, 0x81, 0x4e, 0xe4, 0x9f, 0x8c, 0xc8, 0x7f, 0xa3, 0xe0,
    0x8d, 0xf1, 0x0f, 0x38, 0xe5, 0x3f, 0xc4, 0x2c, 0x24, 0x65, 0x8d, 0xb9,
    0x58, 0xac, 0x39, 0x0e, 0x37, 0x99, 0x2e, 0x85, 0xe0, 0xb7, 0x98, 0x41,
    0x20, 0x38, 0x1b, 0x95, 0x07, 0xfa, 0xa8, 0x9c, 0x21, 0x0f, 0x13, 0x8c,
    0xa5, 0xc1, 0x76, 0xae, 0x0b, 0xc1, 0x30, 0x27, 0x08, 0xc1, 0xf6, 0x4d,
    0xce, 0xb4, 0x41, 0x38, 0x1e, 0x82, 0x10, 0x74, 0x45, 0x91, 0x90, 0xff,
    0x41, 0x8b, 0x62, 0x1a, 0x71, 0xb6, 0x45, 0x63, 0x8c, 0xce, 0xb8, 0x54,
    0x1b, 0xe8, 0x5d, 0x9e, 0x35, 0x9d, 0x6c, 0xac, 0xe8, 0x83, 0xa1, 0xe9,
    0x3f, 0x13, 0x74, 0x11, 0x04, 0x10, 0xf1, 0x37, 0x38, 0xc6, 0x00, 0x60,
    0x27, 0x48, 0x38, 0x85, 0x92, 0x76, 0xb7, 0xf3, 0xa7, 0x1c, 0x4b, 0xf9,
    0x3b, 0x5a, 0x88, 0xac, 0x60, 0x1b, 0x85, 0x81, 0x16, 0xab, 0x44, 0x17,
    0x08, 0x2e, 0x0f, 0xd4, 0xe2, 0xde, 0x49, 0xc9, 0xe1, 0xc0, 0xc0, 0xa0,
    0x7e, 0x73, 0xa1, 0x67, 0xf8, 0xf5, 0x9f, 0xc4, 0x21, 0x50, 0x4f, 0x05,
    0x2c, 0xfc, 0x5c, 0xaa, 0x85, 0xb0, 0xfa, 0x67, 0x80, 0x7e, 0x0f, 0xfd,
    0x92, 0x30, 0xd5, 0xa0, 0xd4, 0x05, 0xdd, 0x06, 0x68, 0x1d, 0x6e, 0x4e,
    0x8b, 0x79, 0xd6, 0xfc, 0xff, 0x2e, 0x6e, 0x7c, 0xba, 0x03, 0x90, 0xd4,
    0x25, 0x65, 0x8e, 0xe7, 0x3a, 0xd1, 0xd6, 0xdc, 0xf0, 0xbe, 0x12, 0xc4,
    0x31, 0x08, 0x16, 0x70, 0x31, 0x85, 0x61, 0x38, 0x27, 0x0a, 0x91, 0x5f,
    0x03, 0x38, 0xeb, 0x37, 0x13, 0x48, 0x41, 0xbe, 0x7f, 0x04, 0x70, 0x62,
    0x2b, 0x15, 0x91, 0x67, 0x63, 0x4f, 0xad, 0xa7, 0x1d, 0x3f, 0x44, 0x17,
    0x02, 0x08, 0x0d, 0xf2, 0xfc, 0x03, 0xa0, 0x74, 0x21, 0x8b, 0x07, 0x3a,
    0x8d, 0x0f, 0x54, 0x58, 0x94, 0x12, 0xc5, 0x62, 0x18, 0xb9, 0x42, 0xf0,
    0x6c, 0x73, 0xa0, 0x92, 0xad, 0x27, 0x1c, 0x20, 0x0f, 0xc1, 0xca, 0x44,
    0x87, 0x47, 0xc5, 0x43, 0x23, 0x01, 0xda, 0x23, 0xe2, 0x89, 0x38, 0x9f,
    0x1f, 0x8d, 0x8c, 0xc6, 0x95, 0xa3, 0x34, 0x21, 0x21, 0x2d, 0x49, 0xea,
    0x4b, 0x05, 0x85, 0xf5, 0x58, 0x25, 0x13, 0xcd, 0x51, 0x19, 0x1a, 0x88,
    0xa6, 0x83, 0xd6, 0xd0, 0xbc, 0x25, 0x19, 0x1c, 0x92, 0x12, 0x44, 0x5d,
    0x1c, 0x04, 0xf1, 0x99, 0xdf, 0x92, 0x8e, 0x09, 0x85, 0xf3, 0x88, 0x82,
    0x4c, 0x22, 0x17, 0xc5, 0x25, 0x23, 0xed, 0x78, 0xf5, 0x41, 0xd1, 0xe9,
    0x8a, 0xb3, 0x52, 0xd1, 0x3d, 0x79, 0x81, 0x4d, 0x31, 0x24, 0xf9, 0x38,
    0x96, 0xbc, 0xf4, 0x8c, 0x25, 0xe9, 0xf2, 0x73, 0x94, 0x85, 0xc2, 0x61,
    0x6a, 0x34, 0x68, 0x65, 0x78, 0x87, 0xa6, 0x4f
};
static const size_t kDecodedAudioLengthInBytes = 9216u;

} // namespace

namespace media {

// Helper macro to skip the test if MediaCodecBridge isn't available.
#define SKIP_TEST_IF_MEDIA_CODEC_BRIDGE_IS_NOT_AVAILABLE()              \
    do {                                                                \
        if (!MediaCodecUtil::IsMediaCodecAvailable()) {                 \
            VLOG(0) << "Could not run test - not supported on device."; \
            return;                                                     \
        }                                                               \
    } while (0)

static const int kPresentationTimeBase = 100;
static const int kMaxInputPts = kPresentationTimeBase + 2;

static inline const base::TimeDelta InfiniteTimeOut()
{
    return base::TimeDelta::FromMicroseconds(-1);
}

void DecodeMediaFrame(VideoCodecBridge* media_codec,
    const uint8_t* data,
    size_t data_size,
    const base::TimeDelta input_presentation_timestamp,
    const base::TimeDelta initial_timestamp_lower_bound)
{
    base::TimeDelta input_pts = input_presentation_timestamp;
    base::TimeDelta timestamp = initial_timestamp_lower_bound;
    base::TimeDelta new_timestamp;
    for (int i = 0; i < 10; ++i) {
        int input_buf_index = -1;
        MediaCodecStatus status = media_codec->DequeueInputBuffer(InfiniteTimeOut(), &input_buf_index);
        ASSERT_EQ(MEDIA_CODEC_OK, status);

        media_codec->QueueInputBuffer(input_buf_index, data, data_size,
            input_presentation_timestamp);

        size_t unused_offset = 0;
        size_t size = 0;
        bool eos = false;
        int output_buf_index = -1;
        status = media_codec->DequeueOutputBuffer(
            InfiniteTimeOut(), &output_buf_index, &unused_offset, &size,
            &new_timestamp, &eos, nullptr);

        if (status == MEDIA_CODEC_OK && output_buf_index > 0) {
            media_codec->ReleaseOutputBuffer(output_buf_index, false);
        }
        // Output time stamp should not be smaller than old timestamp.
        ASSERT_TRUE(new_timestamp >= timestamp);
        input_pts += base::TimeDelta::FromMicroseconds(33000);
        timestamp = new_timestamp;
    }
}

TEST(SdkMediaCodecBridgeTest, Initialize)
{
    SKIP_TEST_IF_MEDIA_CODEC_BRIDGE_IS_NOT_AVAILABLE();

    std::unique_ptr<media::MediaCodecBridge> media_codec;
    media_codec.reset(VideoCodecBridge::CreateDecoder(
        kCodecH264, false, gfx::Size(640, 480), nullptr, nullptr,
        std::vector<uint8_t>(), std::vector<uint8_t>()));
}

TEST(SdkMediaCodecBridgeTest, DoNormal)
{
    SKIP_TEST_IF_MEDIA_CODEC_BRIDGE_IS_NOT_AVAILABLE();

    std::unique_ptr<media::AudioCodecBridge> media_codec;
    media_codec.reset(AudioCodecBridge::Create(kCodecMP3));

    ASSERT_TRUE(media_codec->ConfigureAndStart(kCodecMP3, 44100, 2, nullptr, 0, 0,
        0, nullptr));

    int input_buf_index = -1;
    MediaCodecStatus status = media_codec->DequeueInputBuffer(InfiniteTimeOut(), &input_buf_index);
    ASSERT_EQ(MEDIA_CODEC_OK, status);
    ASSERT_GE(input_buf_index, 0);

    int64_t input_pts = kPresentationTimeBase;
    media_codec->QueueInputBuffer(input_buf_index, test_mp3, sizeof(test_mp3),
        base::TimeDelta::FromMicroseconds(++input_pts));

    status = media_codec->DequeueInputBuffer(InfiniteTimeOut(), &input_buf_index);
    media_codec->QueueInputBuffer(input_buf_index, test_mp3, sizeof(test_mp3),
        base::TimeDelta::FromMicroseconds(++input_pts));

    status = media_codec->DequeueInputBuffer(InfiniteTimeOut(), &input_buf_index);
    media_codec->QueueEOS(input_buf_index);

    input_pts = kPresentationTimeBase;
    bool eos = false;
    size_t total_size = 0;
    while (!eos) {
        size_t unused_offset = 0;
        size_t size = 0;
        base::TimeDelta timestamp;
        int output_buf_index = -1;
        status = media_codec->DequeueOutputBuffer(InfiniteTimeOut(),
            &output_buf_index, &unused_offset,
            &size, &timestamp, &eos, nullptr);
        switch (status) {
        case MEDIA_CODEC_DEQUEUE_OUTPUT_AGAIN_LATER:
            FAIL();
            return;

        case MEDIA_CODEC_OUTPUT_FORMAT_CHANGED:
            continue;

        case MEDIA_CODEC_OUTPUT_BUFFERS_CHANGED:
            continue;

        default:
            break;
        }
        ASSERT_GE(output_buf_index, 0);
        EXPECT_LE(1u, size);
        total_size += size;
    }
    EXPECT_EQ(kDecodedAudioLengthInBytes, total_size);
    ASSERT_LE(input_pts, kMaxInputPts);
}

TEST(SdkMediaCodecBridgeTest, InvalidVorbisHeader)
{
    SKIP_TEST_IF_MEDIA_CODEC_BRIDGE_IS_NOT_AVAILABLE();

    std::unique_ptr<media::AudioCodecBridge> media_codec;
    media_codec.reset(AudioCodecBridge::Create(kCodecVorbis));

    // The first byte of the header is not 0x02.
    uint8_t invalid_first_byte[] = { 0x00, 0xff, 0xff, 0xff, 0xff };
    EXPECT_FALSE(media_codec->ConfigureAndStart(
        kCodecVorbis, 44100, 2, invalid_first_byte, sizeof(invalid_first_byte), 0,
        0, nullptr));

    // Size of the header does not match with the data we passed in.
    uint8_t invalid_size[] = { 0x02, 0x01, 0xff, 0x01, 0xff };
    EXPECT_FALSE(
        media_codec->ConfigureAndStart(kCodecVorbis, 44100, 2, invalid_size,
            sizeof(invalid_size), 0, 0, nullptr));

    // Size of the header is too large.
    size_t large_size = 8 * 1024 * 1024 + 2;
    uint8_t* very_large_header = new uint8_t[large_size];
    very_large_header[0] = 0x02;
    for (size_t i = 1; i < large_size - 1; ++i)
        very_large_header[i] = 0xff;
    very_large_header[large_size - 1] = 0xfe;
    EXPECT_FALSE(media_codec->ConfigureAndStart(
        kCodecVorbis, 44100, 2, very_large_header, 0x80000000, 0, 0, nullptr));
    delete[] very_large_header;
}

TEST(SdkMediaCodecBridgeTest, InvalidOpusHeader)
{
    SKIP_TEST_IF_MEDIA_CODEC_BRIDGE_IS_NOT_AVAILABLE();

    std::unique_ptr<media::AudioCodecBridge> media_codec;
    media_codec.reset(AudioCodecBridge::Create(kCodecOpus));
    if (!media_codec)
        return;

    uint8_t dummy_extra_data[] = { 0, 0 };

    // Extra Data is NULL.
    EXPECT_FALSE(media_codec->ConfigureAndStart(kCodecOpus, 48000, 2, nullptr, 0,
        -1, 0, nullptr));

    // Codec Delay is < 0.
    EXPECT_FALSE(
        media_codec->ConfigureAndStart(kCodecOpus, 48000, 2, dummy_extra_data,
            sizeof(dummy_extra_data), -1, 0, nullptr));

    // Seek Preroll is < 0.
    EXPECT_FALSE(
        media_codec->ConfigureAndStart(kCodecOpus, 48000, 2, dummy_extra_data,
            sizeof(dummy_extra_data), 0, -1, nullptr));
}

TEST(SdkMediaCodecBridgeTest, PresentationTimestampsDoNotDecrease)
{
    SKIP_TEST_IF_VP8_DECODER_IS_NOT_SUPPORTED();

    std::unique_ptr<VideoCodecBridge> media_codec(VideoCodecBridge::CreateDecoder(
        kCodecVP8, false, gfx::Size(320, 240), nullptr, nullptr,
        std::vector<uint8_t>(), std::vector<uint8_t>()));
    EXPECT_TRUE(media_codec.get());
    scoped_refptr<DecoderBuffer> buffer = ReadTestDataFile("vp8-I-frame-320x240");
    DecodeMediaFrame(media_codec.get(), buffer->data(), buffer->data_size(),
        base::TimeDelta(), base::TimeDelta());

    // Simulate a seek to 10 seconds, and each chunk has 2 I-frames.
    std::vector<uint8_t> chunk(buffer->data(),
        buffer->data() + buffer->data_size());
    chunk.insert(chunk.end(), buffer->data(),
        buffer->data() + buffer->data_size());
    media_codec->Flush();
    DecodeMediaFrame(media_codec.get(), &chunk[0], chunk.size(),
        base::TimeDelta::FromMicroseconds(10000000),
        base::TimeDelta::FromMicroseconds(9900000));

    // Simulate a seek to 5 seconds.
    media_codec->Flush();
    DecodeMediaFrame(media_codec.get(), &chunk[0], chunk.size(),
        base::TimeDelta::FromMicroseconds(5000000),
        base::TimeDelta::FromMicroseconds(4900000));
}

TEST(SdkMediaCodecBridgeTest, CreateUnsupportedCodec)
{
    EXPECT_EQ(nullptr, AudioCodecBridge::Create(kUnknownAudioCodec));
    EXPECT_EQ(nullptr,
        VideoCodecBridge::CreateDecoder(
            kUnknownVideoCodec, false, gfx::Size(320, 240), nullptr,
            nullptr, std::vector<uint8_t>(), std::vector<uint8_t>()));
}

} // namespace media
